Trading the untradable index
Backtesting fills on the NIFTY spot index, a number you cannot buy or sell, lets a strategy trade at prices no real instrument ever offered.
· 4 min read
Approach
Costs & execution
Wrong costs, in either direction
A round-number cost assumption can be off by several times. Under-estimating costs flatters bad strategies; over-estimating them quietly kills good ones, and you never find out.
· 3 min read